mem_task.h

基于snd1c芯片的mp3播放器源代码

/*H**************************************************************************
* NAME:         mem_task.h         
*----------------------------------------------------------------------------
* Copyright (c) 2002 Atmel.
*----------------------------------------------------------------------------
* RELEASE:      snd1c-refd-nf-3_0_0      
* REVISION:     1.4.2.4     
*----------------------------------------------------------------------------
* PURPOSE:
* This file contains the memory task definition
*****************************************************************************/

#ifndef _MEM_TASK_H_
#define _MEM_TASK_H_

/*_____ I N C L U D E S ____________________________________________________*/


/*_____ M A C R O S ________________________________________________________*/

/*----- Memory status -----*/
#define MEM_BUSY            ((Byte)0)
#define MEM_READY           ((Byte)1)
#define MEM_FORMAT          ((Byte)2)


/*----- Memory delay -----*/
#define MEM_FUNCT_TIME      ((Byte)0x00)
#define MEM_WRITE_TIME      ((Byte)0xFD)    /* 2 ticks min time_out */
#define MEM_DELAY_TIME      ((Byte)0x01)    /* 1 tick min time_out */
#define MEM_TIME_OUT        ((Byte)0x00)


/*----- Task states -----*/
#define MEM_CHIP_INIT       ((Byte)0)
#define MEM_CHIP_IDLE       ((Byte)1)
#define MEM_MMC1_INIT       ((Byte)2)
#define MEM_MMC1_ACQ        ((Byte)3)
#define MEM_MMC1_SETUP      ((Byte)4)
#define MEM_MMC1_IDLE       ((Byte)5)
#define MEM_MMC2_STACK_INIT ((Byte)6)
#define MEM_MMC2_MMC1_ACQ   ((Byte)7)
#define MEM_MMC2_MMC1_SETUP ((Byte)8)
#define MEM_MMC2_INIT       ((Byte)9)
#define MEM_MMC2_ACQ        ((Byte)10)
#define MEM_MMC2_SETUP      ((Byte)11)
#define MEM_MMC2_IDLE       ((Byte)12)
#define MEM_MMC1_ERROR      ((Byte)13)
#define MEM_MMC2_ERROR      ((Byte)14)
#define MEM_CHIP_ERR_FMT    ((Byte)15)
#define MEM_MMC1_ERR_FMT    ((Byte)16)
#define MEM_MMC2_ERR_FMT    ((Byte)17)
#define MEM_INIT            ((Byte)18)


/*_____ D E F I N I T I O N ________________________________________________*/


/*_____ D E C L A R A T I O N ______________________________________________*/

void    mem_task_init (void);
void    mem_task (void);
Byte    mem_status (void);
bit     mem_check_card (void);
void    mem_select_next (void);
bit     mem_select_format (void);


#endif  /* _MEM_TASK_H_ */